BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
ATW→DEN

Appleton, WI (ATW) to Denver, CO (DEN) flight delay odds

78.1% of 433 official scheduled ATW-to-DEN flights arrived on time; 14.5% arrived at least 30 minutes late and 0.9% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
78.1%arrived on time
14.5%30+ min late
0.9%cancelled
433scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.9%all scheduled flights
120+ minutes late3.0%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+8.4 mincompleted flights

Which departure time was most reliable for ATW to DEN?

Among qualifying ATW-to-DEN departure window results, Early morning had the highest on-time rate: 80.5% of 364 flights. Afternoon was lowest at 64.4% across 59 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning36480.5%12.9%1.1%
Afternoon5964.4%23.7%0.0%

Which weekday was most reliable for ATW to DEN?

Among qualifying ATW-to-DEN weekday results, Monday had the highest on-time rate: 83.3% of 60 flights. Wednesday was lowest at 70.9% across 55 flights.

DayFlightsOn time30+ minCancelled
Monday6083.3%11.7%1.7%
Tuesday6275.8%14.5%1.6%
Wednesday5570.9%23.6%0.0%
Thursday7275.0%19.4%0.0%
Friday5981.4%13.6%0.0%
Saturday5483.3%9.3%1.9%
Sunday7177.5%9.9%1.4%

Which airline was most reliable for ATW to DEN?

Among qualifying ATW-to-DEN airline results, United Airlines had the highest on-time rate: 87.5% of 40 flights. Allegiant Air was lowest at 75.0% across 52 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines34177.4%15.0%1.2%
Allegiant Air5275.0%17.3%0.0%
United Airlines4087.5%7.5%0.0%

Which month was most reliable for ATW to DEN?

Among qualifying ATW-to-DEN month results, May 2026 had the highest on-time rate: 88.2% of 34 flights. July 2025 was lowest at 64.5% across 62 flights.

MonthFlightsOn time30+ minCancelled
July 20256264.5%22.6%0.0%
August 20254187.8%9.8%0.0%
September 20253886.8%10.5%0.0%
October 20253976.9%15.4%0.0%
November 20252982.8%10.3%0.0%
December 20253167.7%22.6%0.0%
January 20263167.7%22.6%0.0%
February 20262882.1%7.1%3.6%
March 20263174.2%9.7%9.7%
April 20263080.0%16.7%0.0%
May 20263488.2%11.8%0.0%
June 20263984.6%10.3%0.0%

What drove ATW to DEN delay minutes?

Airline was the largest recorded ATW-to-DEN delay category, accounting for 52.9% of 7,400 BTS-attributed delay minutes during July 2025–June 2026.

Airline52.9%
Late aircraft3.6%
National airspace26.4%
Weather17.0%
Security0.1%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.